Walk In Freezer Evaporator Coil Freezing Up

Moisture from the air freezes onto the evaporator coils the cooling coils in the freezer and forms an insulating barrier to heat transfer.

Walk in freezer evaporator coil freezing up.

If you notice ice build up around your evaporator coil your freezer may be experiencing a fan delay relay failure. When this humid air passes over the cold evaporator coils it condenses and freezes on the coils. Improper air flow check to make sure there is nothing blocking the return air vent this is the opening where the air goes across the evaporator coil and returns to the unit. This is something an experienced technician can diagnose and repair.

The evaporator coil is the part of your cooler that is responsible for actually removing the heat from the unit. This prevents it from getting the airflow it needs to properly move heat which means that the system could then freeze over. Over time your system s evaporator coil will become covered in dust dirt grime and more. Clogs cause water to pool and freeze over time.

Once i got the coil defrosted we found that the cause was the food delivery driver lea. Is at 39 degree f. Also check all gauges to be sure temperatures subcooling superheat and pressures are all normal. Each evaporator has a defrost cycle to melt frost ice that has built up on the evaporator coils.

Ice can also develop near your drain if your drain line becomes clogged. Evaporator coil cleaning is an essential part of our ac tune up service for this exact reason. Your evaporator coil could also just be dirty. This was a service call on an iced up walk in freezer evaporator coil.

Airflow also decreases as the passages narrow due to ice buildup. If airflow is blocked you ll end up with a frozen coil. Next check for a clean coil and clear drain line. First it is a walk in chiller using r22 when it ice up it starts from the bottom until it cover the entire coil and the unit is a chiller it does not carry a defrost cycle.

If the walk in cooler is freezing up the first step is to melt ice off the evaporator and then check that the evaporation fan is running and rotating correctly. 5 reasons spot cooler coils freeze up and what to do about it. If the door gasket is torn or not creating a reliable seal or if the freezer is not shut tightly humid air can leak into the freezer.